Rotor and method of making



Oct. 29, 1946. w. H. BASELT ETAL ROTOR AND METHOD OF MAKING Filed July 8, 1942 4 Sheets-Sheet 1 Oct. 29,1946. W, g, BASEI T ETA 2,410,195

ROTOR AND METHOD OF MAKING Filed July 8, 1942 4 Sheets-Shed 2 Oct. 29, 1946.

w. H. BASELT ETAL. r

' ROTOR AND METHOD OF MAKING" Filed July 8, 1942 4 Sheets-Sheet 3 INVENTORS. o'fffieweflt Oct. 29,- 1946.

w. H BASELT ET'AL 2, 0, 95 ROTOR AND METHOD OF MAKING Filed July 8, 1942 -4 SheetsSheet 4 I-llll ll NAN Patented d. 29, i4

ROTOR AND METHOD OF MAKING Walter H. Baselt, Tucson, Ariz., and Carl E. Tack,

. Chicago, 111.,

Jersey assignors to American Steel Foundries, Chicago, 111.,

a corporation of New Application July 8, 1942, Serial No. 450,136-

19 Claims. '1

Our invention relates to brake equipment and particularly to a novel form of rotor designed to' beassociated with other braking means com- :monly called stators Whose engagement with said rotor is commonly utilized as a means of stopping a wheel or other rotating-member.

' Our novel rotor is particularly adapted for use with railway rolling stock' and is so illustrated, although it will be understood that such a rotor maybe utilized for any equivalent purpose for which it may be readily adapted. I

In the present development of off-wheel brakes for railway rolling stock, it has been found necessary to develop. a particularly rigid rotor cap'able of dissipating a tremendous amount of heat (energy. in order .to afior-d stopping means for ;present day high speed trains.

Theigeneral object of our invention is to devise a rotor which will be eminently satisfactory :for such a: purpose and wherein the required :strength as well as the heat dissipating qualities 'will be afiorded and which at the same time will readily meet practical requirements ofmanufac- :ture-as Well as necessary operating conditions,

An'object ofour invention is to devise such a rotor comprising'a disc-like support which may be readily fastenedto the hub of -a Wheel orother rotating member and may 'serve'as carrying meansfor a brake ring, saidbrake ring defining in certain of the disclosed modifications a double blower 'in'which air is drawn. between the brake surfaces thereon from'opposite sides of, thefdisclikesupport member and said brake ring in'an other modification defining a single blower rotor in which air is drawn betweenethe friction suriacesfrom only. one side of the disc-like support member;

A'specifi c object or bur invention is to design a fabricated rotor of the above described type in which spaced annular, backing members afford support for iron brake rings cast on the outer surfaces thereof, saidbacking members also atfording support for radial blades: welded therebetween f In certain of the modifications disclosed 2 the backing members 7 are annular plates flanged respectively at the outer perimeters thereof and in another modification the backing members are annular pieces of metallicmesh.

In certain of the modifications disclosed the supporter hub member for the rotor is disposed intermediate the ,brakingmembers, thus forming aldouble blower rotoras above described and in one modification. the support or hub member'is formed as an integral. parti'of vone of. the backing .above'described. r I

In the drawings, Figure 1 is aside elevation of; a' fabr-icated double blower rotor embodying our plates, said plates afiording support for annular iron brake rings cast thereon as above described.-

Our invention comprehends a double :blower rotor formed and arranged asdescribed in the co-pending application Serial No. 409,999, filed September 8, 1941, in the name of Carl E. Tack' and which has issued as Patent No. 2,350,970,'

dated June 6, 1944. I

Another object of our invention is to devise'f a fabricated double blower rotor as above described in which the hub member or support disc is cast integral with the iron brake rings and comprises radial ribs extending between the backing members at spaced points, said ribs extending through openings in the backing-members to merge with the brake rings and each of said ribs being reinforced by webs on the hub:

member merging at right angles with said rib.

Another object of our invention is to devise a fabricated double blower rotor of the above deescribed type in which the hub member or sup= port dis-c is welded between radial bladeswhich are in turn welded to the respective backing mem= bers, said members affording support for the iron brake rings cast on the outer surfaces thereof as previously described. 1 I

Still another object of our invention is to devise a single blower rotor in which spaced backing plates aflord a supportfor iron brake rings cast thereon, said plates also afiording a support for radial blades welded therebetween, one

of the backing plates being formed as a hub member and having an annular reinforcing ring welded thereto at its point of securement' to an associated Wheel or other rotating member-, 1 A further object of our invention is to' devise a novel method of manufacturing a rotor such as invention. Figure 2 is an edge elevation taken from the right of Figure 1, the-lower half of Figure 2'being asectional view'in the radial plane indicated by theline 22 of Figure 1; and Figure 31s a further sectional view taken in theradial plane'indicated by the line 33 of Figure 1,.

Figure 4 is a side view of another modification: of our novel rotor, the lefthalf th'ereof' being a view in elevation, the. upper rightvquarterbeing va sectionalviewtaken in the plane indicated by the line 4 4 of Figure"5,:.a'nd.- the lowerright 1 quarter. being a' sectional-view taken ,in the. plane indicated by the line 4A-..-4A of Figure 5. a Figure 5 is an edge view taken froml;therightas:seen

in Figure 4, the lower half thereof being a view in 3 elevation and the upper half thereof being a sectional view taken in the plane indicated by the line 55 of Figure 4, and Figure 6 is a sectional view taken in the plane indicated by the line 6-6 of Figure 4.

Figure '7 is a side view of another modification of our invention, and Figure 8 is an edge view taken from the right as seen in Figure '7, the upper half thereof being a view in elevation and the lower half thereof being a sectional view taken in the plane indicated by the line 6-8 of Figure 7.

Figure 9 is a fragmentary side View of still another modification of our invention, only the upper half of the rotor being shown inasmuch as said rotor is symmetrical in design as in the previous modifications. Figure 10 is a sectional view taken in the radial plane indicated by the line IDI0 of Figure 9 and Figure 11 is a further sectional view taken in the radial plane indicated by the line I I--II of Figure 9. Figure 12 is a fragmentary edge elevation taken from the top as seen in Figure 9.

Describing our invention in detail and referring first to the modification shown in Figures 1 to 3 inclusive, the rotor comprises a pair of spaced annular backing plates 2, 2, each of said plates being flanged at 4 about the outer perimeter thereof. The spaced radially arranged blades 6, 6 extend between the backing plates 2, 2

faces are formed and arranged for engagement with stationary brake shoes or other nonrotat'ing friction members, whereby the rotor and the rotating member to which it is attached may be conveniently decelerated aswill be clearly apparent to those skilled in the art.

The brake rings I6, I6 are integral with the disc-like support or hub member cast on the backing plates as hereinafter more fully described, and integral radial ribs 22, 22 are formed on the hub 26, and extend between the brake rings I6, I6 through the associated openings I0, I0 in the backingplates, as best seen in the lower half of Figure 2, and at opposite sides of each rib 22 are formed webs 24,24 merging at right angles with the rib 22, said webs 24, 24 being integral with the hub 20 as will be best understood from a consideration of Figures 1 and .3'. The hub 261s formed with an annular flange 26 at the inner perimeter thereof and with a series of spaced bosses 28, 28 adjacent said perimeter, said bosses having respective openings 36, 36 therethrough. To those skilled in the art it will be clearly apparentthat the flange 26 will be received within a complementary bore on an associated rotating member, said hub portion being seated at 32 (Figures 2. and 3) against said member and being secured thereto by any convenient means such as bolts or rivets extending through the openings 30, 36 and through aligned openings on the associated rotating member, the openings 30, in the rotor being reinforced by the bosses28, 28 as will be clearly apparent.

In the modification shown in Figures 1 to 3 the fabricated rotor disclosed is formed by spot welding the flanges 8, 8 of the blades 6, 6 to the backing plates 2, 2. The backing plates and the blades welded thereto are then inserted into a mold and the brake rings I6, I6 and the hub 20 are cast thereon, the openings II], II] in the backing plates permitting the castiron to flow into said openings, thus forming the lugs I2, I2 on the brake rings I6, I6, said lugs serving to make secure the connection between the rings I6, I6 and the backing plates 2, 2 as will be clearly apparent to those skilled in the art.

Another modification of our invention is shown in Figures 4 to 6 inclusive. In this modification a pair of spaced annular members 52, 52, formed of metal mesh, are welded to the spaced radially arranged steel blades 54, 54, said backing members 52, 52 affording a support for the iron brake rings 56, 56 cast on the outer sides thereof, said rings being integral with the disc-like support or hub member 58 comprising the spaced radially arranged ribs 60, 60 extending between the backing members 52, 52 and integral with the brake rings 56, 56. At opposite sides of each rib 66 are the webs 62, 62 merging at right angles therewith, said webs being integral with the support or hub member 58. It will be noted from a comparison of Figures 4 and 6 that the steel blades 54, 54 at opposite sides of each radial rib 60 are relieved as at 64, 64 respectively in order to accommodate the reinforcing webs 62, 62 associated with the rib 60.

The support or hub member 58 comprises the annular flange 66 at the inner perimeter thereof and said hub member also comprises the spaced bosses 68, 68 therearound, each of said bosses comprising an opening I0 therethrough. It will be readily apparent that, as in the previous modification, the flange 66 will be received within a complementary bore on an associated wheel or other rotating member. The hub portion will seat as at I2 against said rotating member, the rotor being secured to said member by any convenient means extending through the openings 10, I0 and secured to the associated member.

In the modification shown in Figures 4 to 6 the fabricated rotor disclosed is manufactured by spot welding the radial steel blades 54, 54 to the mesh backing members 52, 52, said blades and said mesh members being then inserted in a mold and the brake rings 56, 56 as well as the hub or support member 56 being cast thereon as will be clearly apparent.

Still another modification of our invention is disclosed in Figures '7 and 8 wherein the spaced annular backing plates I 62, I02 are welded to the substantially V-shaped radially arranged blades I64, I64 at opposite sides of the rotor. Extending between the blades I64, I 04 at each side of the rotor is a bell-shaped support or hub member I66 welded as at I68, I68 to said blades. The backing plates I62, I02 are flanged as at III], III] respectively for the accommodation of the iron brake rings I I2, I I2 cast on the respective backing plates, said brake rings extending through openings I I4, I I4 on the respective plates as in the modification shown in Figures 1 to 3 inclusive.

The inner perimeter of the hub member I66 comprises the annular flange I I6, said flange be ing receivable within a complementary bore on an associated rotating member as described for the corresponding flanges disclosed in the previous modifications. On the inner surface of the hubmember I96 and adjacent the inner perimeter throughnlItwillvbe apparent that therotor. shown in Figures .7 and. Smaybesecuredto. an associated rotating memberrthrough the openings J22, I22 7, substantially asdescribedior the previoussmodim fications, the. annular rin ,I I8, serving as. r in.-

forcing means as ,will'. b,e ,clearly.apparent. i,

. In, the. modification.shownjnFigures ,7, and B,

thecenter member formed ofa pressed steel plate H I94, I04, said blades thenbeingspot welded at I 24, 1.2.4,; to the respective annular ba k n p ates.

I02, J02. The structure thus f o rmed is then placed in amold and the annu a ir n b ake n s H2, IIZLa e castto. the respe tive ackine lat s I02, I02 as described for theprevious modifica:

t ons,. the cast. ron .Qomprisins the r n 2, 1 extending through. the openings II4, [I4 the cient securement thereto. may be w to. t e su po t r bu m m er. I

either before or after the casti-ng of the brake rings II2, [I2 as desired; v r

.A fourthmodification flour i entionis dis.- osed-in es 9 2 nc ve. an ipt i modification the spaced annular backing plates I 52 and 153 r W d a 4 1] Mthmu h r n openi he to. the "ra ial te ib a s. I5 I56, he a ns l t I53 cor b s l the annu flan e I 3. t he, inn rer met rrt e eqitp a flange being formedand arranged for reception within a complementary bore on an associated rotating m m er. a w ll be swarmedl h backing plate I53 ;comprisestheopenings I60, I60 adjacent its inner; perimet er and welded to said plate are the spaced annular rings I62, I 52 com prising "theo penings'lt d, I54 therethrough, the openings I64 being lignedvvith the openings I60 on thebacking plate I5 3 in order to afford passage for associated securing means, said means in se e e .FQ Q T the so at d mtating memberas in the modifications previously described. v

.T was i late ajtt' a eiaiegw e ea a n anna rin lites; be ts n in Figure -10 'a nd between each blade I56 and the cations disclosed, we havedesigned a fabricated o r'i h. a al. t l. b ad s ar iwe d p. 11 n. S a ar ba kin m m ers, sa d. backing members affording support for iron brake adjacent blade l56'area pair of, radial steel,

blades I68, I 6 8, saidblades being reversely flanged at; opposite edges thereoi as at I10; I'I0,i n order to facilitate the welding or said blades to the backing plates Island I5 3 ,"said blades being spot welded to saidplates as in the case of the corresponding blade disclosed in the previous modifications. a

Each backing annular flange II2- on the outer perimeterf thereplate iISZ and I53 comprises an of'and the spaced circular; openings I14, I14 extending therethrough. Gaston the outer surface of each of the'backing'plates;l52, and I53 is an iron brake ring 116, said brake. ringextending through the openings ,I'I I, H4 in the associated backin plate and abutting the fiangej'nthereon as will be clearlyapparent from a consideration oiFiguresQand 1 1. g v r e It will be readily apparent that the modificationshown in Figures 9 to 12 inclusive differs from the previous modifications in that one of the backing plates I53 isjf ormed and arranged as a support or hub member and comprises the means "for securingxlthe'irotor to an associated rotating member, .Whe'rfeaskin the previous modifications the hub member was connected to the rotor between the backing plates, whereby a double blower rotor was. formed which, tdu'ringeopera-fl tion thereof, was adapted todraw; air between.

the backing members from opposite sidesot the.

support member..

In. themodification disclosed in Figures inclusive, the blades I56, I 56,, and vI 63,;..l,68..- are... welded between the backing plates I52 and I53,

and. the structure thus formed isplacedina mold ing plate 15s ancLto the bladesI56, I56 either beforeorafter the casting operation but pref er.-

ably beforesaid operation in order to form a rigid structure upon which to cast the iron brake rin hus. it w be se nth t n e ch o heq qd z rings cast thereon, in certain of the modifieations the brake rings bein integral withadisc like hub member extending between the backing plates, in another modiiieation the;steelblades being welded to adis c-like backing plate inter p ed e ween. heh a esia d. in still anothe modification one of the backing platesbeing 4 m d. and ar n ed as? u m mbe .rrhereby m'r is. drawn between the backing plates from one side oiithe hub member only.

It s t b u de s q that. e do n t wish-t be limited bythe exactembodiments of the de; i 20M? wh r me el W st tionand not limitation as various and other forms of the device will, of course, be apparent to those U skilled in the art without departing from the spirit of the invention or the scope or the elaims.

wec a r 1. The method of and then casting brake rings on the remote surfaces of said members and simultaneously casting asupport hub with radial ribs extending between said members and into certain of the perforations therethrough.

2. In a rotor, spaced annular friction members,

spaced webs extending between said members at 1 opposite sides of each riband joining the 'same'at substantially right angles thereto, eachofsaid Webs extending through a radial slot in the adjacent blade.

4.'In a fabricated brake rotor,spac ed backing members, brake rings cast-on the remote surfacesrthereoflqa support "hub, having portions extendingbetween said members, and cast thereon, and blades extending between and welded at" opposite edges thereoftoisaidjmembers. V 5. In a fabricated brake rotor, spaced backing members, brake rings cast on the remote surfabricating a rotorcompris ing the steps Qtwelding a plurality of spaced radial blades at opposite edges thereof to apair ofspaced perforated annular backing nembers,

faces thereof, a support hub having portions extending between said members and cast thereon, and blades extending between and welded at opposite edges thereof to said members, said backing members being formed with annular flanges on their outer perimeters confining said rings.

6. In a fabricated brake rotor, spaced annular perforated backing members, metallic brake rings cast on the remote surfaces of said members,'and'a hub member comprising radial ribs extending between said backing members, said ribs being cast through the perforations in said members and merging with said rings.

'7. Ina fabricated brake rotor, spaced annular perforated backing members, metallic brake rings cast on the remote surfaces of said members, a hub member comprising radial ribs extending between said backing members, said ribs being cast through the perforations in said members and merging with said rings, and a plurality of webs on said hub member merging with opposite sides of each rib at substantially right angles thereto.

8. In a fabricated brake rotor, spaced annular backing members, a plurality of spaced radial blades welded between said members, metallic brake rings cast on the remote surfaces of said members, and a hub member comprising radial ribs extending between said backing members and 4 cast thereon.

9. In a fabricated brake rotor, spaced annular backing members, a plurality of spaced radial blades welded between said members, metallic brake rings cast on the remote surfaces of said members, and a hub member comprising radial ribs extending between said backing members and cast thereon, said hub member comprising a p1urality of webs merging at opposite sides of each rib at substantially right angles thereto.

10. The method of fabricating a rotor comprising the steps of inserting into a mold a structure consisting of spaced annular perforated backing members and substantially radial blades connected therebetween, and then casting on said structure brake rings abutting theremote sides of said members and simultaneously casting a support hub with substantially radial ribs extending between said members and merging with said rings through said perforations.

11. In a fabricated brake rotor, spaced backing members, a plurality of blades connected therebetween, metallic brake members cast on the remote sides of said backing members, and a hub memberwith spaced portions extending betweert said backing members and cast through openings therein to merge with said brake members, at least one of said backing members and'its asso ciated brake member being provided with fluid. inlet means communicating with the space be-- tween said backing members.

12. In a fabricated brake rotor, spaced backing members each being formed of metallic mesh, a plurality of blades connected therebetween, metallic brake members cast on the remote sur faces of said backing members, and a hub with spaced ribs extending between said backing members and cast therethrough to merge with. said brake members, at least one of said backing members and its associated brake member being provided with a fluid inlet communicating with. the space between said backing members;

13, A fabricated brake rotor comprising spaced 8 perforated backing plates, a hub member having spaced portions extending therebetween and east through the perforations in said'plate's to merge with brake rings cast on the remote sides thereof, blades connected between said plates, and annular flanges on the outer perimeters of said plates confining the associated rings.

14. In a fabricated brake rotor, spaced annular backing members, a plurality of spaced radial blades welded between said members, metallic brake rings cast on the remote surfaces of said members, and a hub member comprising radial ribs extending between said backing members and cast thereon, said hub member comprising a plurality of webs merging at opposite sides of each rib at substantially right angles thereto, each of said webs extending through a radial slot in the adjacent blade. 7

15. A fabricated rotor comprising spaced backing members with openings therethrough, blades welded between said members, and a structure cast on said members comprising brake rings on the remote sides of said members and a support member including spaced portions merging with said rings through said openings.

16. A method of fabricating a rotor comprising the steps 'of inserting into a mold a structure comprising spaced perforated backing members, at least one of which is provided with a central opening, and substantially radial blades connected between said members, and then casting on said structure brake rings abutting the remote sides of said members and simultaneously casting a support hub extending through said opening with a plurality of spaced columns extending between said members and through certain of said perforations to merge with said rings.

17. A method of fabricating a rotor gomprising the steps of inserting into a mold a structure comprising spaced backing members, at least one of which comprises a central opening therethrough, and substantially radial blades connected between said members, and then casting on said structure brake plates abutting the re- :mote sidesof said members and simultaneously .casting a support hub extending through said openings with spaced portions extending between said members and into passages therethrough to merge with respective plates.

18. A method of fabricating a rotor comprising the steps of welding a plurality of radial blades at opposite edges thereof to a pair of spaced perforated backing members, at least one of which is provided with a central opening, and then casting friction elements on the remote surfaces of said members and simultaneously casting a support hubextending through said opening with a plurality of spaced columns extending between said members and through certain of the perforations therethrough.

19. A method offabricating a brake rotor com prising the steps of welding a plurality of blades to a pair of spaced backing members, at least one of which comprises a central opening, and then "casting friction plates on the remotesides of said members and'simultaneously casting a support hub extending through said opening with spaced integral portions extending between said members and into passages therethrough to merge with respective plates.

WALTER. I-I. 'BASELT. CARL E. TACK; 

